Window-regulator wheel support



March 18 1924. 1,486,962

E. E. HEINTZ WINDOW REGULATOR WHEEL SUPPORT Filed Aug. 23. 1922 ERNEST E. HEINTZ, OF DETROIT, MICHIGAN, ASSIGNOR TO 1 -1 "i ING COMPANY, OF DETROIT, MICHIGAN, A COBPOTION OF WINDOW-REGULATOR wnmn sn'rroa'r.

Application filed August 23,

To all whom it may concern:

Be it known that I, ERNEST E. Hnm'rz, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in \Vindow-Regulator \Vheel Supports, of which the following is a specification.

This invention relates to window regulators and especially to the mounting for the lower rotatable member which is either a pulley wheel or a sprocket wheel. In a prior patentto Allmand and Lawrence, #1.317,150, there is describedand claimed an improvement of this nature which has a very limited turning movement about a vertical axis. It is the purpose of a mounting of this kind to permit the lower pulley 'or sprocket wheel to twist slightly on a vertical axis so as to prevent the chain or cable from running 0H the sprocket when the upper pulley wheel or sprocket is so placed as to tend to pull the cable or chain off the lower member.

It is the object of the present invention to provide a carrier for the lower rotatable member which is both slidable vertically and has a considerable turning range on the Patent No. 1,317,150.

In the drawings:

Fig. 1 is an inside elevation of a door equipped with a window regulator containing the improved mounting.

Fig. 2 is a vertical section on the line 22 of Fig. 1.

Fig. 3 is a view taken on the line 33 of Fig. 2.

Fig. 4 is a perspective of a yoke member.

The various parts of the regulator will be plain enough from the elevational view. It matters not so far as this invention is concerned what the form of the flexible draft member is, whether it is a cable or a chain. It makes no difference what form the upper rotatable member takes; in the drawings it is shown as an elongated drum a, on which a cable 0 winds. The lower rotatable member in the drawings takes the form of a pulley wheel designated d, although obviously it might be a sprocket wheel as shown in the prior Alhnand Patent No.

1922. SeriaLRo. 583,728.

1,317,150. Riveted to the vertical strap iron e, are a pair of ears f, which are perforated to permit the rod 9 to pass slidably therethrough. This rod is secured through the ends of the yoke or carrier h, which 1s provided with a pin 2' on which rotates the pulley wheel d. The coiled spring 7' at its top end engages against the ear f and at its bottom end pushes against the lower end of the yoke and consequently always tensions the draft member and automatically takes up any slack.

The yoke member faces toward the strap iron frame :0 and the ears f and this permits the carrier on the rotatable pulley to twist on a vertical axis through a considerable number of degrees. Not only is the number of degrees of twisting increased over that shown in the rior patent, but the are on which the pul ey wheel moves has a very much larger radius and consequently the pulley wheel can move automatically laterally to either side a larger distance than is the case with the prior construction. This therefore, permits the device to automatically adjust itself to any strains imposed by different locations of the upper parts of the regulator. The carrier itself being a simple strap iron yoke member, it is much cheaper to manufacture than the casting shown in the prior patent.

What I claim is:

1. In a window regulator, the combination ofa frame, a carrier member provided with a vertical projecting rod, means connected with said frame for slidably and rotatably supporting said rod, one or more of the end portions of the carrier en aging rod, and a rotating member rotatab y supported by an intermediate portion of the carrier at a 5 point somewhat radially removed from the axis of the rod, whereby the said carrier member and rotating member are both slidable and rotatable on a vertical axis with respect to said frame on an arc of relatively we large radius.

2. In a'window regulator, the combination of a frame, an ear projecting from the frame and provided with a perforation, a oke in the form of a stamping provided wit a rod 105 slidable and rotatable in said perforation of the ear, and a rotatable member rotatably supported by said yoke.

3. In a window regulator, a combination of the frame, a perforated ear projecting no I perforated ear, and a rotatable member supported by the yoke.

4. In a window regulator, the combination of a frame provided with a perforated ear,

' a yoke facing toward the frame and ear, a

rod supported by the ends of the yoke and passing through the perforated ear, a spring coiled about the ro and abutting at one end against the perforated ear and at the other end gainst the inside of one of the yoke arms, and a rotatable member supported by the yoke. I

5. In a window regulator, the combination Of a frame provided with a pair of perforated ears, a yoke having the arms of the yoke one on the outside of the ears and the other between the ears and facing towards the ears and the frame, a rotatable member supported on the yoke, a rod secured to the ends of the yoke, and slidably and rotatably supported in-the two perforated ears,- and a coil spring about the rod having one end abutting against one ear and the other end abutting against the arm of the yoke between the two ears.

In testimony whereof I affix m signature.

ERNEST E. EINTZ. 

